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Rzqust [24]
3 years ago
14

What is the answer to x+1/2=5

Mathematics
2 answers:
jonny [76]3 years ago
6 0
X= 4.5 or 9/2

subtract 1/2 to move it to the other side (x=5-1/2)
subtract 5-1/2
Katen [24]3 years ago
3 0

Answer:

x=4.5

Step-by-step explanation:

get x on one side by subtracting 1/2 on both sides

5-1/2 = 4.5

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Troyanec [42]
4.133 kilometers

2.063 + 2.07 = 4.133
6 0
3 years ago
Please help with this math question
Ymorist [56]
Area of the rectangle minus area of 2 circles

Area of rectangle is 8x16
Area of circle is pi•r^2 = 3.14 x 4^2= 3.14•16

Answer is:
128 - 2(3.14•16) square inches
3 0
3 years ago
Big babies: The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighe
Vedmedyk [2.9K]

Answer:

Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

P-value=P(t>2.84)=0.0024

Step-by-step explanation:

Hypothesis test on the population mean.

The claim is that the mean weight of one-year-old boys is greater than 25 pounds.

Then, the null and alternative hypothesis are:

H_0: \mu=25\\\\H_a:\mu>25

The significance level is α=0.05.

The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.

The degrees of freedom are:

df=n-1=354-1=353

The t-statistic is:

t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{25.8-25}{5.3/\sqrt{354}}=\dfrac{0.8}{0.2817}=2.84

For a right tailed test and 353 degrees of freedom, the P-value is:

P-value=P(t>2.84)=0.0024

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

There is enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

7 0
3 years ago
Answer :)<br><br>--<br><br>show your work if you can will give brainliest to best answer
Flauer [41]

Answer:

2: x=6

3: x=5

Step-by-step explanation:

Question 1 is answered in the picture, but the answer is 6

<h2>Question 2:</h2>

x=14.3-(6.3+2)

x=14.3-8.3

x=6

<h2>Question 3:</h2>

x=20.6-(8.6+7)

x=20.6-15.6

x=5

6 0
3 years ago
Please help! Big grade! Extra points!! Help asap!
Sonbull [250]

Answer:

5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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